Hi Ziko, first of all you have tremendous patience and perseverance that you could take GMAT thrice. Trust me, I would have broken down perhaps in the first go. Here is my situation - I bought the
MGMAT books an year ago, read all of them Quant (not verbal), attended their live 9 course session, thought that was enough to win the race, so spent all my savings to buy the course and did it with attention. Half way through lost interest, cos the course was not up to my particular standard (extremely personal opinion). Gave up. Started self study. Anyone following my posts will know, how many failures I had. The reason I am taking the failures is cos I cant take the failure in the exam.....
Many a times, we bank on the self prep materials more than desired. I will advice the following:
1. Take a months break
2. Dont think about GMAT for the whole months breaktime
3. When you get back to studies, realize your improvement area is more of Verbal, and less of Quant - refer to your error logs, analyze them
4. Start hitting the nails - re do all the prep materials and CAT - under controlled GMAT environment (from time, to break to every other nukes), meaning simulate accordingly
5. Your study hours are adequate - so ensure that you sleep the required amount of time
6. 2 days before the test - my recommendation, you should give up all preps and may be focus on simple reading/AWA section - this will release sufficient stress
7. Most importantly, I feel - you must discipline yourself - time to study, time to relax, time for job, time to sleep etc. Since you are not in a die hard situation currently, this will help (I am currently trying to do so, and realized the efficiency is increasing)
Regarding your skills, you did not mention much, so simply could give a bird's eye view of your situation. Hope this helps. To my understanding I am sure you do not need any more courses to help you, but may be following the forum more regularly and De-stressing yourself, while you take a planned and guided approach to your exam will surely help.
Remember its nothing but a mind game. You hold it you win it. I have not given the exam, but surely following the forum helps me a lot, also the downturns dont pull me down. ALL THE BEST